\begin{tikzpicture}[even odd rule, x=2cm, y=2cm]
    
    \filldraw[fill=yellow!80!black, rounded corners=10pt, draw=black](0.5, 0.5) rectangle (-.5, -.5)
     [xshift=0.5cm, yshift=0.5cm](0.5, 0.5) rectangle (-.5, -.5)
     [rotate=30](-2, -2) rectangle (2, 2);

\end{tikzpicture}